pontis 0.0.9

Core package for Pontis oracle on Starknet

Pontis Oracle

This is the repository for the Pontis Oracle on Starknet.

About

You can read more about the Pontis Oracle here.

The Oracle contract is deployed at 0x037f6eb00ae24c94e401ac729ca297727a19b8c85d5c7fc201452e892689b9b1. (TODO: update with proxy contract address)

Setup

After you have cloned the repository, run the following commands to set up the repo:

1. pip install -r requirements.txt
2. pip install -e .

Usage

Interacting with Deployed Contracts

Make sure you set the following environment variables to be able to interact with the deployed contract:

STARKNET_NETWORK=alpha-goerli

Then you can use the Starknet CLI to invoke the contract. For instance to get the price of USD/ETH first calculate the key by converting the string to the UTF-8 encoded felt 24016925336360008 (use str_to_felt util in pontis.core.utils). Then run the following commands, replacing <ORACLE_ADDRESS> with the address of the Oracle (see above):

starknet-compile contracts/Oracle.cairo --abi oracle_abi.json --output oracle_compiled.json
starknet call --address <ORACLE_ADDRESS> --abi oracle_abi.json --function get_price --inputs 24016925336360008

Running Tests

To run tests, simply run pytest . from the project root.

Deploying Contracts

To deploy this contract on Goerli testnet (e.g. to test behavior outside of the production contract), first create a private/public key pair that will be required to allow new publishers to register with the contract (use get_random_private_key and private_to_stark_key in starkware.crypto.signature.signature).

Then run the following commands, replacing <PUBLIC_PUBLISHER_REGISTRATION_KEY> with the public key you generated in the previous step.

export STARKNET_NETWORK=alpha-goerli
starknet-compile contracts/Oracle.cairo --abi oracle_abi.json --output oracle_compiled.json
starknet deploy --contract oracle_compiled.json --inputs <PUBLIC_PUBLISHER_REGISTRATION_KEY>

Publishing a New Version

First, make sure to set the environmental variable PYPI_API_TOKEN.

To publish a new version, just run bumpversion <part> (where <part> is major, minor or patch). Then run python3 -m build to generate the distribution archives. Finally upload the new distribution with twine upload dist/* -u __token__ -p $PYPI_API_TOKEN.

To publish a new version,

• look at using bumpversion
• copy pypi publishing command
• git/github tagging